feat: migrate agent core to pydantic-ai framework

tests/test_main.py

@@ -8,11 +8,9 @@ pytestmark = pytest.mark.anyio
 @patch("main.load_dotenv")
 @patch("main.os.chdir")
 @patch("main.GiteaClient")
-@patch("main.GiteaTools")
 @patch("main.AgentOrchestrator")
 async def test_main_startup_success(
     mock_orchestrator_class: MagicMock,
-    mock_tools_class: MagicMock,
     mock_client_class: MagicMock,
     mock_chdir: MagicMock,
     mock_load_dotenv: MagicMock
@@ -21,7 +19,7 @@ async def test_main_startup_success(
     mock_client_class.return_value = mock_client
     mock_user = MagicMock()
     mock_user.login = "agent-test"
-    mock_client.get_authenticated_user.return_value = mock_user
+    mock_client.repos.get_authenticated_user.return_value = mock_user
 
     mock_orchestrator = MagicMock()
     mock_orchestrator.poll_and_dispatch = AsyncMock(side_effect=KeyboardInterrupt())
@@ -30,18 +28,16 @@ async def test_main_startup_success(
     # Run main; it should exit gracefully on KeyboardInterrupt
     await main()
 
-    mock_client.get_authenticated_user.assert_called_once()
+    mock_client.repos.get_authenticated_user.assert_called_once()
     mock_orchestrator.poll_and_dispatch.assert_called_once()
 
 
 @patch("main.load_dotenv")
 @patch("main.os.chdir")
 @patch("main.GiteaClient")
-@patch("main.GiteaTools")
 @patch("main.AgentOrchestrator")
 async def test_main_startup_fails_no_authenticated_user(
     mock_orchestrator_class: MagicMock,
-    mock_tools_class: MagicMock,
     mock_client_class: MagicMock,
     mock_chdir: MagicMock,
     mock_load_dotenv: MagicMock
@@ -49,7 +45,7 @@ async def test_main_startup_fails_no_authenticated_user(
     mock_client = MagicMock()
     mock_client_class.return_value = mock_client
     # Simulate no user returned
-    mock_client.get_authenticated_user.return_value = None
+    mock_client.repos.get_authenticated_user.return_value = None
 
     with pytest.raises(SystemExit) as exc_info:
         await main()